Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-04-20
Phys.Atom.Nucl.73:961,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
Scientific paper
10.1134/S1063778810060098
The Fermi-Watson theorem is generalized to the case of two coupled channels
with different masses and applied to final state interaction in $K_{e4}$
decays. The impact of considered effect on the phase of the $\pi\pi$ scattering
is estimated and shown that it can be crucial for scattering lengths extraction
from experimental data on $K_{e4}$ decays.
Gevorkyan S. R.
Sissakian Alexei N.
Tarasov Victor A.
Torosyan H. T.
Voskresenskaya O. O.
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